[Bug web/109355] Add a text warning to old gcc online manual stating it is out of date

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109355

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Oh and the manual is not exactly out of date for that version of gcc. So the
text you have would be wrong.